CONTROL DEVICE FOR BORING MACHINE
THE OPERATION OF AN ELECTRIC DRILL IS INHIBITED WHEN IT IS INTERRUPTED BY AN ABRUPT FAULT SUCH AS POWER FAILURE AND THEN THE FAULT IS RECOVERED, OR WHEN THE COIL OF AN ELECTROMAGNET HAS A TROUBLE SUCH AS DISCONNECTION. AFTER THE FAULT IS ELIMINATED WITH A POWER SWITCH (50) REMAINING CLOSED FOR ENERG...
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